Understanding Sqlzoo Select In Select 2
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Andrew Cumming demonstrates how to calculate the population of European countries as a percentage of Germany's population. The tutorial covers dividing by a subquery, multiplying to find the percentage, and using the concat function to format the final output with a percentage symbol. List the name and continent of countries in the continents containing either Argentina or Australia. Order by name of the country. SQLZOO select in select Q10
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